the use of chemical weapons is and would be totally unacceptable. and if you make the tragic mistake of using these weapons, there will be consequences and you will be held accountable. >> meanwhile, "the new york times" reports russia appears to be weakening in its steadfast support for president assad. the senior turkish official says moscow agreed to a new approach that would seek ways to persuade assad to relinquish power. >>> kate middleton remains in a london hospital today as the world learns she is expecting. there is a sign of how much thins changed since another royal pregnancy, the one that would lead to the birth of her husband, prince william. remember this? >> lady diana spencer became the princess of wales in the ceremony watched by the world at the end of july buckingham palace today say she is expecting. >> nbc's michelles could inski is in london for us. folks team to be a tad excited about this. >> yeah, it's great news. and also difficult news for kate since she's been feeling so poorly. this morning the palace is trying to maint